A new study has made a shocking revelation about vitamin-D. It has been said that vitamin-D is not effective in protecting against corona virus. While a research at the beginning of the corona epidemic said that vitamin-D protects against infection and reduces the risk of death. But now McGill University of Quebec, Canada, found in its research that the body of a corona infected and healthy person No difference was found in the amount of vitamin D. It states that neither can patients be protected from infection due to excessive vitamin-D nor does it reduce the severity of infection. This study has been published in PLOS Medicine.